MSW(Municipal Solid Waste) incineration plays an important pole in MSW disposal.But MSW incineration would bring secondary pollution if MSW incinerator runs out of order,especially dioxins,as restricts MSW incineration promotion and utilization.Summarized the research result about dioxins formation and oxidization reactions in MSW incineration,analysed the influencing factors of dioxins emission in MSW incineration,discussed the technologies that can settle total dioxins emission in MSW incineration,in order to accelerate the MSW incineration technologies promotion.